/*
 * Copyright (c) 2009, Hamish Morgan. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the University of Sussex nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package locusts.server.collisions;

import locusts.common.entities.Actor;
import locusts.common.entities.Entity;
import locusts.lib.MathUtil;

/**
 *
 * @author Hamish Morgan
 * @deprecated This responce is totally rubbish, unrealistic, buggy,
 *      error prone, and generally bad in all ways.
 */
public class BounceCR extends EntityCRAdapter {

    public BounceCR() {
    }

    public void doCollision(Entity A, Entity B, double period) {

        if (A instanceof Actor) {
            Actor p = ((Actor) A);

            double bv = 0;
            if (B instanceof Actor) {
                Actor q = ((Actor) B);
                bv = q.getVelocity();
//                q.setX(q.getX() - q.getVelocityX());
//                q.setY(q.getY() - q.getVelocityY());
                }
            double dx = p.getX() - B.getX();
            double dy = p.getY() - B.getY();
            final double d = Math.sqrt(dx * dx + dy * dy);


            if (MathUtil.epsilonEqual(d, 0, 1e-10d))
                return;

            // normalise
            dx /= d;
            dy /= d;


            double vv = (p.getVelocity() + bv) / 4;
            dx *= vv;
            dy *= vv;

//            diff.scale((p.getVelocityMagnitude() + q.getVelocityMagnitude()) /
//                    4);

            p.setAcceleration(0, 0);

            p.setVelocity(p.getVX() + dx, p.getVY() + dy);

            p.setModified();
//            p.addVelocity(diff);

        }

    }
}
